1. Karst developed contemporaneously with the lithification of the formation, as in eolian calcarenite where lithification and karstification of dune sands may proceed simultaneously [10]. 2. Karst landforms that developed upon young, porous carbonate rocks, such as aeolianites, as they underwent lithification [9]. Synonyms: (French.) karst syngenetique; (German.) Syngenetischer Karst; (Greek.) synegeticon karst; (Italian.) carsismo singenetico; (Spanish.) karst singenetico; (Turkish.) esturumlu karst; (Yugoslavian.) singenetski krs (kras).